P00A8
Intake Air Temperature Sensor 2 Circuit High Bank 2
Air intake / temperature sensor
Generic OBD-II
Low
What it means
P00A8 means the second intake air temperature sensor on Bank 2 is reporting a signal that's too high, which corresponds to an implausibly cold reading — usually an open circuit or a short to voltage. It's a sensor-signal fault: the ECM uses a substitute value, so the engine typically still runs normally with only minor fueling effects.
Low
Can I keep driving? Usually fine to drive — this is a sensor-signal fault; expect at most slightly richer cold running or minor economy loss, not a breakdown.
Common symptoms
What you'll notice
- Check-engine light on
- Slightly rich running or minor fuel-economy loss (often no noticeable symptom)
- Intake air temperature reads implausibly low/cold on a scan tool
Common causes
Most likely first
- Faulty intake air temperature sensor 2 (Bank 2)Likely
- Open circuit or wiring shorted to voltage in the sensor signal lineCommon
- Loose or corroded connector at the sensorCommon
- ECM software needing an update (uncommon)Less often
How to diagnose & fix
Work through it in order
- Read the live IAT 2 (Bank 2) value and compare it to the other air/coolant temps on a cold engine — they should agree.
- Inspect the sensor connector and wiring for a broken signal wire or a short to voltage.
- Back-probe the signal circuit to confirm whether the sensor or the wiring is out of range.
- Replace the intake air temperature sensor 2 if it reads out of range with good wiring, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P00A8?+
Yes, in most cases. It's an air-temperature sensor signal fault. The engine falls back to a default value, so drivability is usually normal — just get it fixed to keep fueling accurate.
Can I just clear P00A8?+
You can, but it returns until the sensor or its wiring is repaired. Clearing without a fix just resets the light temporarily.
Related codes
Often seen with P00A8
Read & clear P00A8 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX